Question

Выполните вычитание: а) 1/11-1/33 б) 7/11-5/8 в) 13/30-2/45 г) 13/60-7/40

Answer 1

$frac{1}{11}-frac{1}{33} = frac{3 - 1}{33} = frac{2}{33}$
$frac{7}{11}-frac{5}{8} = frac{56-55}{88} = frac{1}{88}$
$frac{13}{30}-frac{2}{45}=frac{39-4}{90} = frac{35}{90}=frac{7}{18}$
$frac{13}{60} - frac{7}{40} = frac{26-21}{120} = frac{5}{120} = frac{1}{24}$

Answer 2

1/11 -1/33 =3/33 -1/33=2/33
7/11 -5/8=56/88-55/88=1/88
13/30 - 2/45=39/90-4/90=35/90=7/18
13/60-7/40=26/120-21/120 = 5/120 =1/24